package demo3;

public class KeyBoard implements IUSB{
    @Override
    public void openService() {
        System.out.println("打开键盘");
    }

    @Override
    public void closeService() {
        System.out.println("关闭键盘");
    }
    public void input() {
        System.out.println("输入数据");
    }
}
